Gas-heater.



B. C. BARTLEBAUGH.

GAS HEATER.

APPLICATION FILED APR. Il i918. 1,298,277'. Patented Mar. 25, 1919.

lfl.. ELE- i- (f 9 r-w BENJAMIN C. BARTLEBAUGH, OF WHEELING, WEST VIRGINIA.

GAS-HEATER.

Application led April 11, 1918.

To all whom z't may concern.'

Be it known that I, BENJAMIN C. BARTLE- BAUGH, a citizen ofthe United States, residing at l/Vheeling, in the county of Ohio and State of West Virginia, have invented certain new and useful Improvements in Gas- Heaters; and I do declare the following to Abe a full, clear, and exact description of the invention, such as will' enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to so improve upon previously devised gas heaters asto greatly increase the efficiency thereof, the improvement residing in placing the air mixer of the gas burner in a chamber at t'he lower end of the heater in which the unburned gases from the burner are trapped together with hot air, both under pressure. .By this. arrangement, the mixture of unburned gases and hot air is supplied to the burner with tbe incoming gas and thus much more perfect combustion takes place, this being caused not only by the fact-that the mixture is at a high temperature as it enters and mixes with the incoming gas, but by the fact that said mixture is supphedunder pressure,

thus causing exceptionally long and hot jets of vflame to be projected from the burner.

Vith the foregoing in View, the invention resides -in t'he novel features of construction and unique combinations of parts to be herein'after fully described and claimed, the descriptive matter being supplemented by the accompanying drawing which forms a part of this specification and in which: v

, Figure 1 is a front elevation of the improved heater with parts broken away and in section;

Fig. 2 is a vertical transverse section on the plane of the line 2 2 of Fig. 1; and

Fig. 3 is a horizontalseetion on the line 3 3 of Fig. 2.

In the drawing above briefly described, the niuneral 1 designates an appropriate casing fhaving in its front an opening 2, the interior of said casing being partitioned ofil by a fire wall 3 and a draft board 4 into a front vertical channel 5, an intermediate vertical ehannel 6 and a rear vertical channel 7. The upper ends of the three channels 5, 6 and 7 are in communication with each other and the lower end of channel 7 is enlarged to provide a oollectin chamber 8 closed at its lower end by a sultable bottom Specification o1 Letters Patent.

Patented Mar. 25, 1919.

Serial No. 228,015.

9. The lower ends of the channels 5 and 6 are located in proximity to the upper end of the opening 2 and said ends are open as seen clearly in Fig. 2. The arrangement so far briefly described is very similar toa well known heater, but the shape of the fire wall 3 has been changed and the mineral wool previously employed has been omitted. Instead of using this material, the fire wall is constructed of copper or of any other suitable metal to serve as a heat reflector. An-

other change is in the upper end of the draft board 4, this end being now curved rearwardly as seen at 10 rather than having an abrupt angle, since it is found that this newl arrangement operates to better advantage.

At their lower ends, the channels 6 and 7 communicate through a plurality of openings 11 formed through the lire wall 3 and immediately beneath these openings and in front of said lire wall, a horizontal perfo-y rated lburner 12 is provided, said burner being preferably of the simple and inexpensive construction shown with its gas supply pipe 12 passing across the chamber 8 and having an air mixer 13 located in said chamber. The outer end of this pipe is provided with a needle valve 14 and with a gas cock 15 i which require no description or illustration inA detail.

y The unburnedgases together with hot air from the burner 12 pass upwardly from said burner through the channel 6 and turn. rearwardly into the rear channel 7, while the air entering through the opening 2 and through the lower end of the casing passes upwardly through the channel 5 and also turns rearwardly into the channel 7. The air traveling in this manner is comparatively cool but when it mixes with the hot air and unburned gases from the channel 6, the temperature of the mixture as a whole is maintained at a rather high degree. through the channel 7 into the collecting chamber 8 and prevails in this chamber under considerable pressure, the result being that ysome of this mixture will jet through the openings 11 to be consumed by the flames of the b-urner while the remainder thereof will be forced under pressure into tlie gas supply pipe 12, by way of the air mixer 13. The eflicienoy of the burner is thus greatly increased by supplying a mixture of hot all', hot unburned gases, and hot fresh gas thereto, and at the same time the jets of flame This mixture descends the coaction of these openings with the air Vanalysis from from the burner are increased in length and intensity by the pressure entering through the air mixer.. 13

Y The improved heater has been found to be Y extremely eflicient and to absolutely consume all poisonous gases which usually escape into the room. No carbon monoxid gas can bev found Vafter burning of the gas in the im'- proved heater. This hasbeen proven by `an Cornell University, one Y from Los Angeles,and one fromCleveland, Ohio.

These excellent resultsare duetoV soine extent vto the openings 11,'but principally to mixer 13 with "its inlets chamber 8 as described. i Since probably the best results are obtained from the details shown and described, these details are preferably employed, but

disposed in the within the scope of the invention as claimed, 'numerous minor Vchanges may well be made.

4I claim: Y I

1. A gas heater co prising a casing closed :at'its upper end and divided by a pair of air and unburnedl gases to said frontand intermediate channels, so that the combined Iactionof the two will force said hot air and gases downwardly inthe rear channel, said intermediate andfrear channelscommunieating at their lower ends immediately above Ysaid burner, a'single gas supply pipe said burner extending across the lower end l of'saidrearchannel and a singleY air mixer fr Gopisl et this patent may berobtainerd for upwardly vfrom its lower y tion in said casing having its upper end in said pipe located inv said lower end of the rear; channel whereby k-t'o supply the hot'unburned gases and hotair from this channel to said burnerv with force. y A

y2. `Ina gas heater, a vertically elongated casing having in its front an opening spaced end, a front particurved rearwardly: vand `'terminating' in a horizontal onefpipe burnerV `of the front partition' and spaced relation with the top and back of the casing, the lower vendof said partition terminatingeveii with the upper end of said opening, a rear partition in said casing with its upper end spaced downwardly from said upper end of the being strictly vertical and located substantially Vmidway lbetween the front partition and the back of the casing, and approximately the lower/halfV of lsaid rear partition being also truly vertical, bein located below said frontpartition, 'being o on-an inclined line, and extending to the extreme lower end ofthe casing, la plate extending from the lower'end of said rear par tition to lthe yback ofthe casing and forming the only bottom of the latter, the lower end of said casing being open in front of said rear partition to admit air, a perforated horizontal burnerpipe in the space between front partition, substan- ,tially the upper half of said rear partition set forwardly said front partition and the front of the casing and located belowV the aforesaid i' opening in said casing front, said rearV partition having a series of openings slightly above saidl burner pipe to'cause-the heat ris- Y ing from said pipe to-exert a force tending to induceV a downward current ofl air in' rear fof said rear partition, the ascending currents'of hot air and unburned gases in front between the two combining in foi'ce with each with said inducing force to 'cause partitions other andy j tition` for supplying gas to said burner pipe,

and a single air mixer in said gas pipe f located between said rear 'partition and theV back of the casing for mixing the aforesaid Vhot air and unburned gases with `the fresh gas passing to the burner; A f Y In testimony whereof I have hereuntoset my hand in the presence of two subscribing:

witnesses. Y I y v BENJAMIN' C. BARTLEBAUGrH.V Witnesses: f5' Y p l' Y HAZEL BARTLEBAUGH, J. H.' Snom.

ve centsieaoh, by addressing the Commissioner at Patients, Washington, 11.0. l

Vsaid hot air and unburned gases to travel Y downwardly behind said rear partition, ay 

